Seiko Cal. 4541 - 764

The Seiko 4541-764 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-a8024a5d1f7a]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

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